Weld seam calibration - seam tracking with line laser
Seam tracking with line laser method
This method uses a line laser with sensor to continuously trace the position of the workpiece welding location during the welding operation. The scanned (measured) information then will be used to calibrate the welding seam and adjust the welding torch position constantly.
Operation cycle
The tracking is an option within the welding operation. It adjusts the approach with a lead-in position at the first toolpath position of the seam welding. The tool angle of the welding torch is set to -180 degrees in the programming attributes.
The welding cycle has the following positions, that describe the motion of the scan operation:
| Position | Description | Remark | |
|---|---|---|---|
 | Approach | The approach position at the beginning of the welding seam. | Optional, but set by default in tool (Z) direction. |
 | Lead in | The position between the approach and first welding position to start the scanning. This position is tangentially extrapolated from the beginning position in front of the welding seam. | |
 | Seam beginning | The welding seam beginning position. |
Seam tracking attributes
In the Technology base tech tab of the Programming defaults the standard seam tracking attributes are available. Other controller manufacturer specific attributes may be displayed too but are not described on this page here.
The Receipes container includes the following attributes:
| Attribute | Description | Remark | |
|---|---|---|---|
 | Seam tracking offset | The lead-in distance (offset) from the welding seam beginning position. |
